whois activity-mobcca2.weebly.com/

Domain:
Turn off cache
Try for webbased whois (don't expect it to work yet)

activity-mobcca2.weebly.com/

checking....activity-mobcca2.weebly.com/
$ whois activity-mobcca2.weebly.com/
No whois server is known for this kind of object.